The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 1984
Filed:
May. 14, 1982
Applicant:
Inventors:
Nicolas Meyer, Bully les Mines, FR;
Gilbert Wollaert, Lens, FR;
Assignee:
Societe Chimique des Charbonnages SA, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521103 ; 521121 ; 521181 ;
Abstract
A continuous process for manufacturing quick-setting phenolic foams is improved by using as the hardening agent a concentrated, substantially anhydrous solution of boron trioxide, and using as the blowing agent an organic liquid having a boiling point of 20.degree.-80.degree. C. Curing times are shortened and the resultant foam, having uniformly molecularly dispersed therein about 0.25-10.5% by weight of boron, calculated as boric anhydride, has substantially uniform cells, improved fire resistance characteristics and superior mechanical properties.